.NET usage on the client

January 24, 2007

Nic commented on my recent server stats post asking if we have any stats on the % usage of .NET on the client. As he pointed out the CLR version number is included in the IE user agent string.

I took a sample of 70,000 IE users from recent server logs and these are the results:

.NET CLR version Usage
None 43.9%
1.0.3750 6.7%
1.1.4233 50.8%
2.0.5072 12.5%
3.0.* 1.7%

In case you’re wondering why these percentages add up to more than 100%, it is possible to install multiple versions of the runtime side-by-side. In total 56.1% of people have one or more version installed.

This would give me significant pause if I was developing a client-side application which depends on the runtime being installed.

That’s the beauty of a web application I suppose.

Source data: https://spreadsheets.google.com/pub?key=p03Pw5UOTJJ425das60qoLA